我猜你要
UPDATE table1 cs
SET cs.abc = (SELECT tc.abc
FROM table2 cgl,
table3 tc
WHERE cgl.prd_id = tc.prd_id
AND cgl.prd_ver = tc.prd_ver
AND cgl.py_id = tc.py_id
AND cgl.typ_id = tc.tpy_id
AND cd.common_column = cgl.common_column)
WHERE EXISTS (SELECT 1
FROM table2 cgl,
table3 tc
WHERE cgl.prd_id = tc.prd_id
AND cgl.prd_ver = tc.prd_ver
AND cgl.py_id = tc.py_id
AND cgl.typ_id = tc.tpy_id
AND cd.common_column = cgl.common_column)
更新：除了对列名和表名的更改之外，我的最初答案似乎适用于您发布的示例数据。请注意，发布DDL和DML总是很容易，以便我们可以重现您的表和数据，而不是让我们将您的数据转换为DDL和DML。
如果我创建您的表和数据
sql> create table table1 (
2 prd_id number,
3 prd_ver number,
4 py_id number,
5 typ_id number,
6 column_used_for_update varchar2(10)
7 );
Table created.
sql> begin
2 insert into table1 values( 1, 1, 1, 1, 'VALUE1' );
3 insert into table1 values( 2, 3, 4, 5, 'VALUE2' );
4 end;
5 /
PL/sql procedure successfully completed.
sql> create table table2 (
2 prd_id number,
3 prd_ver number,
4 py_id number,
5 typ_id number,
6 common_column varchar2(10)
7 );
Table created.
sql> begin
2 insert into table2 values( 1, 1, 1, 1, 'A' );
3 insert into table2 values( 1, 1, 1, 1, 'B' );
4 insert into table2 values( 2, 3, 4, 5, 'C' );
5 end;
6 /
PL/sql procedure successfully completed.
sql> create table table3 (
2 common_column varchar2(10),
3 column_to_update varchar2(10)
4 );
Table created.
sql> begin
2 insert into table3 values( 'A', null );
3 insert into table3 values( 'B', null );
4 insert into table3 values( 'C', null );
5 end;
6 /
PL/sql procedure successfully completed.
sql> commit;
Commit complete.
然后根据我的最初答案调整表和列的名称，看来更新正常
sql> ed
Wrote file afiedt.buf
1 UPDATE table3 t3
2 SET t3.column_to_update = (
3 SELECT t1.column_used_for_update
4 FROM table2 t2,
5 table1 t1
6 WHERE t1.prd_id = t2.prd_id
7 AND t1.prd_ver = t2.prd_ver
8 AND t1.py_id = t2.py_id
9 AND t1.typ_id = t2.typ_id
10 AND t3.common_column = t2.common_column)
11 WHERE EXISTS ( SELECT 1
12 FROM table2 t2,
13 table1 t1
14 WHERE t1.prd_id = t2.prd_id
15 AND t1.prd_ver = t2.prd_ver
16 AND t1.py_id = t2.py_id
17 AND t1.typ_id = t2.typ_id
18* AND t3.common_column = t2.common_column)
sql> /
3 rows updated.
sql> select * from table3;
COMMON_COL COLUMN_TO_
---------- ----------
A VALUE1
B VALUE1
C VALUE2
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